[Triton] Shaoclee/085 triton fusion

[k50112113]

this PR includes:

fused input_layernorm + per_token_fp8_quant
fused q_a_layernorm + kv_a_layernorm
tunned fused_qk_rope_cat_and_cache_mla (for bs=256, execution time goes from 24 ~ 27 us to 14 ~15 us)

[github-actions]

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[13524182838]

/lgtm